Java-Inheritance and Polymorph

1. An Airplane is a class used to store the following basic information about an airplane:double myWeight, the weight of the airplane in kilograms;double myLength, the length of the airplane in meters.The Airplane class is defined as follows:public class Airplane { private double myWeight;private double myLength;public Airplane( double weight, double length ) { myWeight = weight;myLength = length;} public double getWeight() { return myWeight;} public double getLength() { return myLength;} }The PassengerJet class extends the Airplane class. It has an additional instance variable, myPassengerCount, that is used to record the maximum number of passengers that can be carried by the airplane.Complete the following definition of PassengerJet:public class PassengerJet extends Airplane{ 收起